Damper



J. E. BELL.

` DAMPER.

' APPLICATION FILED AUG.2. 1918. 1,31 1,436. Patented July 29,1919.

4 SHEETS-SHEET 4 ha arto: muy

` Tu allV wlw/n. Iit may 'onmfrn and owning ii. part of this UNITED STATES PATENT oFFIcE.

.man n. BELL. ornooxtru, new from DAMPEB.

l 'Specification o! Letters Patent.

Patented July 29, 191.9.

Origini application Bled Anmut 8, 1918. erlal No. 247,998. Divided and this application lbil Alllllt I.

` '1916. Serial No. 248,080.

-lloitfknown that l, JoiiN E. Boni., a citizon oflhe linitod Stati-s of America, and ro'shlvnt. of Brmiklyiain tho. count y ol' Kings and Sla-to of New York, havo invented a certain-now und useful Improvement in hampers, of which tho followingl is a true and exiwt dwirription, ratori-neo iol'ng had to the accoini'ianying iliawiiigs..i\'liirh forni a `nrt thereof.

" `y resent invention has for its object to provi( o siliiplo and clito-tivo duniporol or cutol' valves for conduits throiighrwhirh lliiidal at high ttinpei-iitiiroi` aro parsed. My iinproveil damper i-oiis'ii'iiotion was ospurally devised for use in a plantin whit-h a furnaeo'syistein pimpin', .siii-h as it rotary kiln rement furnace system, has associated with it one or more waste hout lioilvrs through which the hot 'prodiwts of combustion from the kilns are passed under certain conditionl of operation, while under other conditions these products are diverted away from tho boilers; and my improved damper orchi-oli valve instruction was primarily devised for wie in opening and i'losing communiontion between the furniiro system proper nud the Waste heat boilers of such Va plant.

The various features of novelty which chamcterite my invention are pointed out with articuliu'ity in the ohims'annexed to speoicatii m. For a better imrleretandingof the invention, however, and the advantages pi :c: by it reference should 'lai had to the accompanyingh drawingn` and descriptivo` matter in whe I have illustrated and described erred embodiments of lny invention.

. V0f the drawings:

Figure 1' is a plan lvie-.w of aportion of the cement kiln fumare and waste heat boiler plant with parts lbroken away and in m- Fg 2 is a partial section on tho line ofFig.l.

Fig. 3 is a siii-tion taken similarly to Fig.

.2, allowing ii portiononly of the apparatus shown in Fig. 2.. in Igreater detail. F1 ig. 4 is .ii section -on the line 4--4 of i 5 is ii. partial section on the line .'L- of Fur. 3. init with thix damper removed.

fFi tl is ar partial onction on the yline 6--6 .o 8.

lait on a larger soule and .J Fig. 'i' iii :in elevation of a mond dtim r part leiaployedV in 'conjunction with tint .shown i'p* Figs. 3 und 4. Fig. *il is a sci-tion on the line 8-8 of Fi U7.

*'ig. J is an of diinipor. K

Filz. ,lo is a i'ow taken similarly/to Fig. il. illustrating;` thiI use of the damperlishown in Fig. ll.

elevation df il'mtxllliyed form Fig. 1l is au 4hevatioii of stil] another a danipor i-oiitrolhd outlet D to a hiis ohannil ll. 'llii` lalloi'. in the plant showmspplies a plurality ol' waste heat boiler units liirtial'ly roolod 'n'oiliiots of combustion drawn through tlm. lmilors F h v the funs ll. al'ii further i-oolod before' reaching tho fans. h v living paasod through economizoru (i. whit-h may sorvo as boiler feed water hunters.' Aliovo eaih stark chamber (l rises thix roi'ri-.s'ponding.r etai-lt proper C. When the produi-t` ol' r-omhiistion are passed from the -haiiihi-r ll into the hun channel E the passage is opi-n. and the outlet through the stack rliaiiihcr C is closed. Whoa the products of coiiihustion entering i this ihamher B pass to the corresponding stack-" and out through the latter.' the stack cminevtion is open, and the outlet D is closed. No moans hy which the steek connection may he sealed, when conditions require, are disvlosed herein. as :nich means form no part of the present. invention. A simple and olfactive stack sealing arrangement forv use in thtl furnace and waste heut boiler Systmn illustrated is disclosed and claimed l' my ivi-pending apploiiton Serial No. 247.923 filed of even datiA herewith.

The invention to whiih the presepi. case pertains consists in special featuremgf construction of the outlet D and in the means employed for closing and openin this' out let passage as oondtions require. nthe oonstruction illustrated in Figi. 1 and Il,A ini-.1u-

wir

sive, each outlet passage D is formed of maf sonry with oppositely directed upwardly inclined bottom wall portions D', which inert at their upper ends and thus form a restricted throat portion of the outlet passage. This throat. in the form shown, has flat bottoni and side walls and an arched top wall. A groove l)`' is formed in the upper side of the bottom wall, and this groove reg,- istcrs at its ends with a slot or kerf D3 formed in the side and top walls of the restricted portion of the passage. The inasonry forming the restricted portion of the passage D is encircled by a. metallic armor formed of two similar )arts D4, which are bolted together at the bottom by bolts D5 connecting adjacent flange portions of the two parts D. These flange portions and thc bolts I)5 may be, and are, shown as being embedded in the masonry forming the bottom wall of the restricted portion of the passage D. The two parts D4 may advantageously be connected adjacent their upper portions by stays D connecting outer lugs or ear portions I)si of the metal Barts D. The latter have inclined portions T which coperate to form outwardly flared outer edge portions of the kerf D3.

l To close the passage D a removable damper I is employed. This is of plate like form, and when in place rests on the bottom wall of the groove D2 and extends through the slot, D"x at the sides and top of the passage. Advantageously, as shown, the damper is formed with a metal rim portion I and refractory body portion formed of tire brick mounted in the metallicl rim. As shown, the rim portion I comprises a one piece n ieinber forming the sides and top of the rnn, and a bottom portionla, which has end ort1ons secured to the outer rib or flange 2 of the upper portion of the rim by bolts IY. The damper I is of a thickness a trifle less than the width of the kerf, to permit the easy msertion and removal of the damper wl en this is necessary. To prevent leakage al ng the joints'between the damper and the sides of the kerf I)3 these joints are luted at their outer edges by moist clay o1' the like. The effective loting of these joints is fac1htated by the inclined surfaces I)T of the metal parts D* and by the provisionof the central rib or flange I2 at the outer snle of the metallic rim I of the damper. Ears I5 secured to the upper portion of the rib I2 form imeans for connecting the damper to a suitable hoisting or transporting device somewhat conventionally illustrated at R in Fig. 2.

With the dam er I in place, as shown in Figs. 3 and 4, tlie passage D is efl'ectually closed. When it is desired to open the passage D the damper I is removed. It then becomes necessar to seal the` korf D" in order to prevent iiiirnace gasesfrom passing outward or air from being sucked into the passage through the kerf. The korf sealing device which I prefer to employ in conjunction with the removable damper I is shown in Figs. 6, 7 and 8. This kerf sealing device J ,las shown, is shaped to fill the korf D3 without-projecting into the throat of the )assage D. The device J differs essentially rom the damper I only7 in having a portion eut away, and comprislng an outer metallic rim portion J', and an inner portion of refractory material, as fire brick,.which is held in place by the rim portion. The rim portion is formed in three sections, a main section J', and two end sections J. The end sections are provided with extensions which overlap the outer rib J2 of the main rim, and are secured `to the latter by bolts J. The rim J' is provided with ears J's for connection to hoistin and manipulating mechanism. The ker sealingr device J is luted in place just as is the damper I.

In the modified construction illustrated in Figs. 9 and 10 the passageway Dlo differs from the passa e D, of the construction first described, in t at the kerf D3" extends entirely across the walls of the passage, and the metallic armor D at the edges of the kerf are entirely disconnected from one another and comprise flared luting orsealng outer portions running all the way around the passage. The damper K is essentially the same in construction as the dam er I first described, except that it is made a out twice as high and is formed in the upper portion with a passageway K. In consequence, when the damper device K is in the osition shown in Fig. 10 it seals the passageqy, and when the damper K is lowered to bring its openingir K into registerwith the passage Dso the device K then serves the function of the separate part J in the construction first de scribed. In either of its two o erative positions the joints between the evice K and the adjacent edges of the korf D are luted with clay.

The modified construction shown in Figs.

11 and 12 differs from that shown in Figs. t) and 10 essentially in that the damper KA is shortened in height and horizontally elongated, and is moved horizontally to substitute its imperforate portion for the opening K1 or vice versa.

The damper constructions illustrated are simple and durable and possess the special advantages for the uses specified, that with them leakage is reduced to a practical lninmum, and difficulties due to the accumulation of flue dnstare minimized.

The avoidance of leakage is of prime irnportance, as the eflicicncy of the waste heat boiler s stem is greatly lowered by any considerabe influx of air into the fines. Ther flue dust which is carried out of the kilns in large yquantities has little opportunity to clog up the passages adjacent the cnt-ott dempers with the downwardly inclined bottom walls at the opposite wslides of the daln'per kerl". Furthermore, the passage adjacent this kerf, which is ordinarily 7 inches or so wide, .may be readily cleaned through the kerf from time to time. Y

lVhile in accordance with the Provisions of the statutes I have illustrated and described the best form of my invention now known to me, it will be apparent to those skilled in the art that changes may be made in the form of my invention without departing from its spirit. and that some features of my invention may sometimes be used to advantage without a corresponding use of other features.

Having now described my invention, what I claim as new and desire to secure by Letters Patent` is:

1. The combination with a conduit formed with a transverse kerf in its wall and a plate like damper removably received in said kerf, said damper and conduit wall being formed with surfaces cot'iperating to forni an accessible lutiiugr material receiving' groove at the outer edges of the joints between the side walls of the kerf and the damper.

2. The combination with a conduit formed with a transverse kerf in its wall, of a damper for said conduit including a part adapted to substantially fill said korf and close the conduit7 and another part adapted to substantially ll the kerf while Ica the conduit open, said damper parts h conduit being formed with accessible sul'- aees eoiiperatng to provide a lutng material receiving groove at the outer ed? of the joints between the side walls of t e kerf and the damper.

3. The combination with a. conduit formed with n transverse kerf in its wall and having the outer portions of the side walls of the kerf inclined away from the plane ofthe korf and made accessible for loting, and a. ilatfe like damper removably received in said {er 4. The combination with a conduit formed with a transverse kerf in its wll. and having the outer portions of the side walls of the kerf inclined away from the plane of the kerf und made accessible for luting, and a plate like dam er removably received in said kei-f and ormed with a metallic rim with a centrali extending rib onits top and sides and a re actory filling.

5. A nmsonry conduit ormed with a transveise damper receiving kerf, with the outer portions of the side walls of said korf flared away from one another and made accessible for luting, und having the walls of said kerf covered by a metallic facing.

JOHN E. BELL. 

